This is a pair of Pro-Line Suburbs 1/8 scale Buggy Tires in X4 Compound.

FEATURES

Inner and outer radius rib tread for increased cornering and
predictable side bite
Predictable, aggressive, and long-lasting tread height for a
variety of blue-groove track, and surfaces that typically require
soft compound tires
X4 compound is ideal for high speed conditions when temperature is
70° or below